Chip packaging structure and manufacturing method thereof

ABSTRACT

A chip packaging structure includes a circuit redistribution structure, a chip, a sealing layer, and an antenna pattern. The circuit redistribution structure includes a first and a second circuit layer, and a conductive pad. The second circuit layer is disposed on and electrically connected to the first circuit layer. The conductive pad is electrically connected to the second circuit layer. The chip is disposed on the circuit redistribution structure and electrically connected to the second circuit layer. The sealing layer having an opening and a groove covers the chip and the circuit redistribution structure. The opening exposes the conductive pad. A portion of the groove communicates with the opening. The antenna pattern includes a first and a second portion. The first portion covers sidewalls of the opening and is electrically connected to the conductive pad. The second portion is filled in the groove and electrically connected to the first portion.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority to Taiwan Application Serial Number107139547, filed Nov. 7, 2018, which is herein incorporated byreference.

BACKGROUND Field of Invention

The present disclosure relates to a chip packaging structure and amethod of manufacturing a chip packaging structure.

Description of Related Art

Conventionally, an antenna pattern is placed on the sealing layer toenhance signal strength. However, an etching process and anelectroplating process are usually required to form the antenna pattern,and therefore the cost is high. In addition, the antenna patternprotrudes from the top surface of the sealing layer, and therefore it isdisadvantageous for thinning electronic devices.

SUMMARY

One aspect of the present disclosure is to provide a chip packagingstructure. The chip packaging structure includes a circuitredistribution structure, a chip, a sealing layer, and an antennapattern. The circuit redistribution structure includes a first circuitredistribution layer, a second circuit redistribution layer, and aconductive pad. The first circuit redistribution layer includes a firstcircuit layer. The second circuit redistribution layer is disposed onthe first circuit redistribution layer and includes a second circuitlayer electrically connected to the first circuit layer. The conductivepad is electrically connected to the second circuit layer. The chip isdisposed on the circuit redistribution structure and electricallyconnected to the second circuit layer. The sealing layer covers the chipand the circuit redistribution structure. The sealing layer has anopening and a groove. The opening exposes the conductive pad, and aportion of the groove communicates with the opening. The antenna patternincludes a first portion and a second portion. The first portion coverssidewalls of the opening and is electrically connected to the conductivepad. The second portion is filled in the groove and electricallyconnected to the first portion.

In some embodiments of the present disclosure, a top surface of thesecond portion of the antenna pattern is coplanar with a top surface ofthe sealing layer.

In some embodiments of the present disclosure, the chip packagingstructure further includes a protecting substrate disposed under thecircuit redistribution structure.

Another aspect of the present disclosure is to provide a chip packagingstructure. The chip packaging structure includes a circuitredistribution structure, a chip, a sealing layer, and an antennapattern. The circuit redistribution structure includes a first circuitredistribution layer and a second circuit redistribution layer. Thefirst circuit redistribution layer includes a first circuit layer. Thesecond circuit redistribution layer is disposed on the first circuitredistribution layer and includes a second circuit layer electricallyconnected to the first circuit layer. The chip is disposed over thecircuit redistribution structure and electrically connected to thesecond circuit layer. The sealing layer covers the chip and the circuitredistribution structure, and the sealing layer has an opening. Theantenna pattern includes a first portion and a second portion. The firstportion is disposed on the circuit redistribution structure and coveredby the sealing layer. The first portion is electrically connected to thesecond circuit layer, and the opening exposes the first portion. Thesecond portion covers sidewalls of the opening and is electricallyconnected to the first portion.

In some embodiments of the present disclosure, the chip packagingstructure further includes a protecting substrate disposed under thecircuit redistribution structure.

In some embodiments of the present disclosure, the sealing layer furtherincludes a groove, in which a portion of the groove communicates withthe opening. The antenna pattern further includes a third portion. Thethird portion is filled in the groove and electrically connected to thesecond portion.

In some embodiments of the present disclosure, a top surface of thethird portion of the antenna pattern is coplanar with a top surface ofthe sealing layer.

In some embodiments of the present disclosure, the opening is a trenchor a through hole.

Yet another aspect of the present disclosure is to provide a chippackaging structure. The chip packaging structure includes a protectingsubstrate, a circuit redistribution structure, a chip, a sealing layer,and an antenna pattern. The circuit redistribution structure has a firstopening and is disposed on the protecting substrate. The circuitredistribution structure includes a first circuit redistribution layerand a second circuit redistribution layer. The first circuitredistribution layer includes a first circuit layer. The second circuitredistribution layer is disposed on the first circuit redistributionlayer and includes a second circuit layer electrically connected to thefirst circuit layer. The chip is disposed over the circuitredistribution structure and electrically connected to the secondcircuit layer. The sealing layer covers the chip and the circuitredistribution structure. The sealing layer has a second openingcommunicating with the first opening. The antenna pattern includes afirst portion and a second portion. The first portion is disposed overthe protecting substrate and covered by the circuit redistributionstructure. The first portion is electrically connected to the secondcircuit layer and exposes the first portion. The second portion coverssidewalls of the first opening and sidewalls of the second opening. Thesecond portion is electrically connected to the first portion.

Yet another aspect of the present disclosure is to provide a method ofmanufacturing a chip packaging structure. The method includes steps of(i) providing a formed body, in which the formed body includes a circuitredistribution structure and a chip disposed over the circuitredistribution structure. The circuit redistribution structure includesa first circuit redistribution layer, a second circuit redistributionlayer, and a conductive pad. The first circuit redistribution layerincludes a first circuit layer, while the second circuit redistributionlayer is disposed on the first circuit redistribution layer and includesa second circuit layer electrically connected to the first circuit layerand the chip. The conductive pad is electrically connected to the secondcircuit layer; (ii) forming a sealing material covering the chip and thecircuit redistribution structure; (iii) patterning the sealing materialto form a sealing layer, in which the sealing layer has an opening and agroove, the opening exposes the conductive pad, and a portion of thegroove communicates with the opening; and (iv) forming an antennapattern, in which the antenna pattern includes: a first portion coveringsidewalls of the opening and electrically connecting with the conductivepad; and a second portion filling in the groove and electricallyconnecting with the first portion.

In some embodiments of the present disclosure, the step (iii) isperformed by a laser direct structuring process.

Yet another aspect of the present disclosure is to provide a method ofmanufacturing a chip packaging structure. The method includes steps of(i) providing a formed body, in which the formed body includes a circuitredistribution structure and a chip disposed over the circuitredistribution structure. The circuit redistribution structure includesa first circuit redistribution layer and a second circuit redistributionlayer. The first circuit redistribution layer includes a first circuitlayer, while the second circuit redistribution layer is disposed on thefirst circuit redistribution layer and includes a second circuit layerelectrically connected to the first circuit layer and the chip; (ii)forming a first portion of an antenna pattern on the circuitredistribution structure; (iii) forming a sealing material covering thefirst portion of the antenna pattern, the chip, and the circuitredistribution structure; (iv) patterning the sealing material to form asealing layer, in which the sealing layer has an opening exposing thefirst portion of the antenna pattern; and (v) forming a second portionof the antenna pattern on sidewalls of the opening, in which the secondportion is electrically connected to the first portion.

In some embodiments of the present disclosure, the step (iii) isperformed by a laser direct structuring process.

In some embodiments of the present disclosure, the sealing layer in step(iv) further includes a groove, a portion of the groove communicateswith the opening; in which the step (v) further includes forming a thirdportion of the antenna pattern in the groove, the third portion iselectrically connected to the second portion.

Yet another aspect of the present disclosure is to provide a method ofmanufacturing a chip packaging structure. The method includes steps of(i) providing a formed body, in which the formed body includes aprotecting substrate, a first portion of an antenna pattern disposedover the protecting substrate, a circuit redistribution precursorstructure disposed on the protecting substrate, and a chip disposed overthe circuit redistribution precursor structure. The circuitredistribution precursor structure includes a first circuit layer and asecond circuit layer. The second circuit layer is disposed on the firstcircuit layer and electrically connected to the first circuit layer, thefirst portion of the antenna pattern, and the chip; (ii) forming asealing material covering the chip and the circuit redistributionprecursor structure; (iii) patterning the circuit redistributionprecursor structure and the sealing material to form a circuitredistribution structure and a sealing layer, in which the circuitredistribution structure has a first opening exposing the first portionof the antenna pattern, and the sealing layer has a second openingcommunicating with the first opening; and (iv) forming a second portionof the antenna pattern on sidewalls of the first opening and sidewallsof the second opening, in which the second portion is electricallyconnected to the first portion.

In some embodiments of the present disclosure, the step (iii) isperformed by a laser direct structuring process.

It is to be understood that both the foregoing general description andthe following detailed description are by examples, and are intended toprovide further explanation of the invention as claimed.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A is a schematic top view of a chip packaging structure accordingto one embodiment of the present disclosure.

FIG. 1B is a schematic sectional view along a cutting line A-A′ of FIG.1A.

FIG. 2A is a schematic top view of a chip packaging structure accordingto one embodiment of the present disclosure.

FIG. 2B is a schematic sectional view along a cutting line A-A′ of FIG.2A.

FIG. 3A is a schematic top view of a chip packaging structure accordingto one embodiment of the present disclosure.

FIG. 3B is a schematic sectional view along a cutting line A-A′ of FIG.3A.

FIG. 4A is a schematic top view of a chip packaging structure accordingto one embodiment of the present disclosure.

FIG. 4B is a schematic sectional view along a cutting line A-A′ of FIG.4A.

FIG. 5A is a schematic top view of a chip packaging structure accordingto one embodiment of the present disclosure.

FIG. 5B is a schematic sectional view along a cutting line A-A′ of FIG.5A.

FIG. 6A is a schematic top view of a chip packaging structure accordingto one embodiment of the present disclosure.

FIG. 6B is a schematic sectional view along a cutting line A-A′ of FIG.6A.

DETAILED DESCRIPTION

The following disclosure provides many different embodiments, orexamples, for implementing different features of the provided subjectmatter. Specific examples of components and arrangements are describedbelow to simplify the present disclosure. These are, of course, merelyexamples and are not intended to be limiting. The embodiments disclosedbelow may be combined or substituted with each other in an advantageoussituation, and other embodiments may be added to an embodiment withoutfurther description or explanation. In the following description, manyspecific details will be described in detail. The details are to enablethe reader to understand the following embodiments fully. However, theembodiments of the present disclosure may be practiced without suchspecific details.

The following disclosure provides many different embodiments, orexamples, for implementing different features of the provided subjectmatter. Specific examples of components and arrangements are describedbelow to simplify the present disclosure. These are, of course, merelyexamples and are not intended to be limiting. For example, the formationof a first feature over or on a second feature in the description thatfollows may include embodiments in which the first and second featuresare formed in direct contact, and may also include embodiments in whichadditional features may be formed between the first and second features,such that the first and second features may not be in direct contact. Inaddition, the present disclosure may repeat reference numerals and/orletters in the various examples. This repetition is for the purpose ofsimplicity and clarity and does not in itself dictate a relationshipbetween the various embodiments and/or configurations discussed.

Furthermore, spatially relative terms, such as “under,” “below,” “over,”“above,” etc., are used to facilitate the description of the relativerelationship between one element or feature and another element orfeature shown in the figure. The actual meaning of the spatiallyrelative terms includes other orientations. For example, when thediagram is flipped upside down by 180 degrees, the relationship betweenone element and another element may change from “under” or “below” to“over” or “above.” In addition, the relative spatially relationship inthis description should be interpreted in the same way.

FIG. 1A depicts a schematic top view of a chip packaging structure 10 aaccording to one embodiment of the present disclosure. FIG. 1B depicts aschematic sectional view of the chip packaging structure 10 a of FIG. 1Aalong a cutting line A-A′. As shown in FIG. 1A and FIG. 1B, the chippackaging structure 10 a includes a protecting substrate 100, a circuitredistribution structure 200, a chip 300, a sealing layer 400, and anantenna pattern 500.

The circuit redistribution structure 200 is disposed on the protectingsubstrate 100 and includes a first circuit redistribution layer 210, asecond circuit redistribution layer 220, a third circuit redistributionlayer 230, and a conductive pad 240. Specifically, the first circuitredistribution layer 210 includes a first circuit layer 211, a firstdielectric layer 212, and a first conductive contact member 213. Thefirst circuit layer 211 and the first conductive contact member 213 areembedded in the first dielectric layer 212. In detail, a bottom surfaceof the first circuit layer 211 is coplanar with a bottom surface of thefirst dielectric layer 212. The first conductive contact member 213 isin contact with the first circuit layer 211, and a top surface of thefirst conductive contact member 213 is exposed outside the firstdielectric layer 212. In some examples, the first circuit layer 211 mayinclude any conductive material, such as copper, nickel, silver, or anymetal of the like. In some examples, the first dielectric layer 212includes ABF (Ajinomoto Build-up Film), polyimide (PI), or aphotoimageable dielectric material (PID). In some examples, the firstconductive contact member 213 may be a metal pillar made of a conductivemetal, such as copper, nickel, or silver.

The second circuit redistribution layer 220 is disposed on the firstcircuit redistribution layer 210. Specifically, the second circuitredistribution layer 220 includes a second circuit layer 221, a seconddielectric layer 222, and a second conductive contact member 223. Thesecond circuit layer 221 and the second conductive contact member 223are embedded in the second dielectric layer 222. In detail, the secondcircuit layer 221 is in contact with an exposed portion of the firstconductive contact member 213, such that the second circuit layer 221 iselectrically connected to the first circuit layer 211. A bottom surfaceof the second circuit layer 221 is coplanar with a bottom surface of thesecond dielectric layer 222. The second conductive contact member 223 isin contact with the second circuit layer 221, and a top surface of thesecond conductive contact member 223 is exposed outside the seconddielectric layer 222. In some examples, the second circuit layer 221 mayinclude any conductive material, such as copper, nickel, silver, or anymetal of the like. In some examples, the second dielectric layer 222includes ABF, polyimide (PI), or a photoimageable dielectric material(PID). In some examples, the second conductive contact member 223 may bea metal pillar made of a conductive metal, such as copper, nickel, orsilver.

The third circuit redistribution layer 230 is disposed on the secondcircuit redistribution layer 220. Specifically, the third circuitredistribution layer 230 includes a third circuit layer 231, a thirddielectric layer 232, and a third conductive contact member 233. Thethird circuit layer 231 and the third conductive contact member 233 areembedded in the third dielectric layer 232. In detail, the third circuitlayer 231 is in contact with an exposed portion of the second conductivecontact member 223, such that the third circuit layer 231 iselectrically connected to the second circuit layer 221. A bottom surfaceof the third circuit layer 231 is coplanar with a bottom surface of thethird dielectric layer 232. The third conductive contact member 233 isin contact with the third circuit layer 231, and a top surface of thethird conductive contact member 233 is exposed outside the thirddielectric layer 232. Moreover, the third dielectric layer 232 has afirst opening 232 a exposing a portion of the third circuit layer 231.In some examples, the third circuit layer 231 may include any conductivematerial, such as copper, nickel, silver, or any metal of the like. Insome examples, the third dielectric layer 232 includes ABF, polyimide(PI), or a photoimageable dielectric material (PID). In some examples,the third conductive contact member 233 may be a metal pillar made of aconductive metal, such as copper, nickel, or silver.

The conductive pad 240 includes a first conductive pad 241 and a secondconductive pad 242. The first conductive pad 241 is disposed on thethird circuit redistribution layer 230. Specifically, the firstconductive pad 241 is in contact with an exposed portion of the thirdconductive contact member 233, such that the first conductive pad 241 iselectrically connected to the third circuit layer 231. In some examples,the first conductive pad 241 may include any conductive material, suchas copper, nickel, silver, or any metal of the like.

The second conductive pad 242 covers a portion of the third dielectriclayer 232, sidewalls of the first opening 232 a, and an exposed portionof the third circuit layer 231. In detail, the second conductive pad 242is conformal with the first opening 232 a, such that the secondconductive pad 242 defines an opening having a shape that issubstantially the same with that of the first opening 232 a. In someexamples, the second conductive pad 242 may include any conductivematerial, such as copper, nickel, silver, or any metal of the like.

The chip 300 is disposed over the third circuit redistribution layer 230and electrically connected to the third circuit layer 231. Specifically,a plurality of metal bumps (not shown) is disposed on a bottom surfaceof the chip 300, and the metal bumps are bonded to the second conductivepad 242 through a soldering material S1, such that the chip 300 iselectrically connected to the third circuit layer 231. As describedabove, the second conductive pad 242 defines the opening having a shapethat is substantially the same with that of the first opening 232 a. Itis noted that the opening provides some technical effects. Specifically,a bottom of the soldering material S1 is embedded in the opening, suchthat the soldering material S1 can be stably fixed on the secondconductive pad 242 and therefore is not prone to peeling off. In someexamples, the soldering material S1 includes a tin ball.

The sealing layer 400 covers the chip 300 and the circuit redistributionstructure 200. Specifically, the sealing layer 400 has a second openingO1 and a groove T1. In some examples, the second opening O1 is a throughhole (as shown in FIG. 1A). The second opening O1 exposes the firstconductive pad 241, and a portion of the groove T1 communicates with thesecond opening O1. As shown in FIG. 1B, a depth D1 of the groove T1 mayrange from 0.2-3 μm, while a depth D2 of the second opening O1 may rangefrom 5-150 μm. In some examples, the sealing layer 400 includes aninsulating material, and it is noted that the insulating materialincludes a plurality of catalyst particles dispersed therein (notshown). The catalyst particles may be metal particles. The catalystparticles provide some technical effects, which will be described belowin detail.

The antenna pattern 500 includes a first portion 510 and a secondportion 520. The first portion 510 covers the sidewalls of the secondopening O1 and is electrically connected to the first conductive pad241. Specifically, a bottom of the first portion 510 is in contact withthe first conductive pad 241. A width W2 of the first portion 510 mayrange from 0.2-3 μm. The second portion 520 is filled in the groove T1and electrically connected to the first portion 510. Specifically, thesecond portion 520 is in contact with a top of the first portion 510,while a top surface of the second portion 520 is coplanar with a topsurface of the sealing layer 400. Therefore, the antenna pattern 500 isnot exposed outside of the top surface of the sealing layer 400, andtherefore it is advantageous for thinning of electronic devices. A widthW1 of the second portion 520 may range from 5-100 μm. In some examples,the antenna pattern 500 includes a metal, such as copper, nickel, orsilver, but is not limited thereto.

The present disclosure also provides a method of manufacturing the chippackaging structure 10 a.

First, a formed body is provided. The formed body includes a protectingsubstrate 100, a circuit redistribution structure 200 disposed on theprotecting substrate 100, and a chip disposed over the circuitredistribution structure. In detail, the first circuit layer 211 isformed on the protecting substrate 100. For example, a conductivematerial is formed on the protecting substrate 100, and the conductivematerial is patterned to form the first circuit layer 211. In someexamples, the conductive material is formed by an electroplatingprocess, a chemical vapor deposition process, a physical vapordeposition process, or the like, but is not limited thereto. Next, afirst dielectric layer 212 is formed and covers the first circuit layer211. The first dielectric layer 212 includes at least one via thatexposes a portion of the first circuit layer 211. For example, adielectric material is formed and covers the first circuit layer 211,and the dielectric material is patterned to form the via. In someexamples, the dielectric material is formed by chemical vapordeposition, physical vapor deposition, or the like, but is not limitedthereto. The conductive material and the dielectric material may bepatterned by depositing a photoresist on a layer that is to bepatterned, followed by exposing and developing the photoresist to form apatterned photoresist layer. Next, the patterned photoresist layer isused as an etching mask when the layer that is to be patterned isetched. Finally, the patterned photoresist layer is removed.Alternatively, in an example where the dielectric material serves as aphotoimageable dielectric material, a portion of the photoimageabledielectric material is removed by an exposure and etching process, suchthat the photoimageable dielectric material is patterned.

Next, a second circuit layer 221 is formed on the first dielectric layer212, and a first conductive contact member 213 is formed in the via ofthe first dielectric layer 212. For example, a conductive material isformed on the first dielectric layer 212 and filled in the via of thefirst dielectric layer 212. Subsequently, the conductive material ispatterned to form the second circuit layer 221 and the first conductivecontact member 213. Then, a second dielectric layer 222, a third circuitlayer 231, and a second conductive contact member 223 are formed byprocesses similar to that of forming the first dielectric layer 212, thesecond circuit layer 221, and the first conductive contact member 213.

Next, a third dielectric layer 232 is formed and covers the thirdcircuit layer 231 and the second dielectric layer 222. The thirddielectric layer 232 includes at least one via and at least one firstopening 232 that exposes a portion of the third circuit layer 231. Forexample, a dielectric material is formed and covers the third circuitlayer 231 and the second dielectric layer 222, and the dielectricmaterial is patterned to form the via and the first opening 232 a.

Subsequently, a third conductive contact member 233 is formed in the viaof the third dielectric layer 232, a first conductive pad 241 is formedand covers the third conductive contact member 233, and a secondconductive pad 242 is formed and covers a portion of the thirddielectric layer 23, sidewalls of the first opening 232 a, and theexposed portion of the third circuit layer 231. For example, aconductive material is formed and covers the third dielectric layer 232,and the conductive material is filled in the first opening 232 a and thevia of the third dielectric layer 232. Then, the conductive material ispatterned to form the third conductive contact member 233, the firstconductive pad 241, and the second conductive pad 242. Consequently, thecircuit redistribution structure 200 is formed on the protectingsubstrate 100.

Then, a chip 300 is disposed over the circuit redistribution structure200. Specifically, a plurality of metal bumps (not shown) on a bottomsurface of the chip 300 is bonded to the second conductive pad 242 byusing a soldering material S1.

Next, a sealing material is formed and covers the chip 300 and thecircuit redistribution structure 200. Subsequently, the sealing materialis patterned to form the sealing layer 400. Specifically, at least onesecond openings O1 and at least one groove T1 of the first conductivepad 241 are exposed after patterning the sealing material by a laserdirect structuring process. It is noted that the sealing materialincludes a plurality of catalyst particles dispersed therein, and thecatalyst particles may be exposed after the sealing material ispatterned. As described above, the catalyst particles provide sometechnical effects. Specifically, the catalyst particles that are exposedafter the sealing material is patterned may absorb laser energy, suchthat the catalyst particles may be “activated.” In this way, the“activated” catalyst particles may serve as seeds, and a metal materialcan be directly deposited in the groove T1 and on the sidewalls of thesecond opening O1 by a chemical deposition process.

Subsequently, an antenna pattern 500 is formed. Specifically, a firstportion 510 of the antenna pattern 500 is formed by a chemicaldeposition process, in which the first portion 510 covers the sidewallsof the second opening O1. A second portion 520 of the antenna pattern500 is formed and filled the groove T1. Since the “activated” catalystparticles are exposed from the second opening O1 and the groove T1, suchthat after the chemical deposition process, the metal material isdeposited in the groove T1 and is also deposited on the sidewalls of thesecond opening O1. It is noted that in the method of manufacturing thechip packaging structure 10 a as described herein, an etching processand an electroplating process are not required during the formation ofthe antenna pattern, thereby reducing manufacturing costs.

FIG. 2A depicts a schematic top view of a chip packaging structure 10 baccording to one embodiment of the present disclosure. FIG. 2B depicts aschematic sectional view of the chip packaging structure 10 b along acutting line A-A′ in FIG. 2A. It is noted that in FIG. 2A and FIG. 2B,the same or similar elements as those in FIG. 1A and FIG. 1B are giventhe same symbols, and the related description is omitted. The chippackaging structure 10 b in FIG. 2A and FIG. 2B is similar to the chippackaging structure 10 a in FIG. 1A and FIG. 1B, and differences betweenthem include a sealing layer 400 of the chip packaging structure 10 bhaving no groove and an antenna pattern 500 of the chip packagingstructure 10 b having no portion filled in a groove.

In addition, the antenna pattern 500 of the chip packaging structure 10b further includes a first portion 530, and the first portion 530replaces the first conductive pad 241 in the chip packaging structure 10a. Specifically, the first portion 530 of the antenna pattern 500 isdisposed on the third circuit redistribution layer 230 and is covered bythe sealing layer 400. The first portion 530 is in contact with anexposed portion of the third conductive contact member 233, such thatthe first portion 530 is electrically connected to the third circuitlayer 231. Moreover, the second portion 510 covers the sidewalls of thesecond opening O1 and is electrically connected to the first portion530. In detail, a bottom of the second portion 510 is in contact withthe first portion 530.

It is noted that as shown in FIG. 2A, the second opening O1 is a throughhole, and the chip packaging structure 10 b may have a plurality ofthrough hole. Consequently, an area of the second portion 510 of theantenna pattern 500 that is formed on the sidewalls of the through holeis increased. Therefore, the signal strength is increased.

The present disclosure also provides a method of manufacturing the chippackaging structure 10 b. The difference between the methods ofmanufacturing the chip packaging structure 10 a in FIGS. 1A-1B andmanufacturing the chip packaging structure 10 b includes forming a firstportion 530 of an antenna pattern 500 on a third conductive contactmember 233 and a third dielectric layer 232 after a third dielectriclayer 232 is formed, in addition to the formation of the thirdconductive contact member 233 and the second conductive pad 242. Forexample, a conductive material is formed and covers the third dielectriclayer 232. The conductive material is also filled in the first opening232 a and the via of the third dielectric layer 232. Next, theconductive material is patterned to form the third conductive contactmember 233, a first portion 530 of the antenna pattern 500 m and asecond conductive pad 242.

Moreover, only the second opening O1 of the first portion 530 of theantenna pattern 500 is formed by a laser process of direct formation.Accordingly, after a chemical deposition process, a metal material isdeposited on sidewalls of the second opening O1, such that a secondportion 510 of the antenna pattern 500 is formed.

FIG. 3A depicts a schematic top view of a chip packaging structure 10 caccording to one embodiment of the present disclosure. FIG. 3B depicts aschematic sectional view of the chip packaging structure 10 c along acutting line A-A′ of FIG. 3A. It is noted that in FIG. 3A and FIG. 3B,the same or similar elements as those in FIG. 2A and FIG. 2B are giventhe same symbols, and the related description is omitted. The chippackaging structure 10 c in FIG. 3A and FIG. 3B is similar to the chippackaging structure 10 b in FIG. 2A and FIG. 2B, and differences betweenthem include a sealing layer 400 of the chip packaging structure 10 chaving at least one groove T1 and an antenna pattern 500 of the chippackaging structure 10 c further including a third portion 520 whichfills the groove T1.

It is noted that compared with the chip packaging structure 10 b, in thechip packaging structure 10 c, an area of the third portion 520 of theantenna pattern 500 that is formed in the groove T1 is increased.Therefore, the signal strength is increased.

The present disclosure also provides a method of manufacturing the chippackaging structure 10 c. The difference between the methods ofmanufacturing the chip packaging structure 10 b in FIGS. 2A-FIG. 2B andmanufacturing the chip packaging structure 10 c includes forming asecond opening O1 exposing the first portion 530 of the antenna pattern500 and a groove T1 communicating with the second opening O1 by a laserdirect structuring process. Therefore, after a chemical depositionprocess, a metal material is deposited on sidewalls of the secondopening O1 and is deposited in the groove T1, such that the secondportion 510 and the third portion 520 of the antenna pattern 500 areformed.

FIG. 4A depicts a schematic top view of a chip packaging structure 10 daccording to one embodiment of the present disclosure. FIG. 4B depicts aschematic sectional view of the chip packaging structure 10 d along acutting line A-A′ of FIG. 4A. It is noted that in FIG. 4A and FIG. 4B,the same or similar elements as those in FIG. 2A and FIG. 2B are giventhe same symbols, and the related description is omitted. The chippackaging structure 10 d in FIG. 4A and FIG. 4B is similar to the chippackaging structure 10 b in FIG. 2A and FIG. 2B, and a differencebetween them includes a second opening O1 of the chip packagingstructure 10 d being a trench (as shown in FIG. 4A).

Specifically, a shape of the trench corresponds to a shape of the firstportion 530 of the antenna pattern 500, and the trench exposes the firstportion 530 of the antenna pattern 500. Consequently, an area of thesecond portion 510 of the antenna pattern 500 that is formed on thesidewalls of the trench is increased. Therefore, the signal strength isincreased.

FIG. 5A depicts a schematic top view of a chip packaging structure 10 eaccording to one embodiment of the present disclosure. FIG. 5B depicts aschematic sectional view of the chip packaging structure 10 e along acutting line A-A′ of FIG. 5A. It is noted that in FIG. 5A and FIG. 5B,the same or similar elements as those in FIG. 3A and FIG. 3B are giventhe same symbols, and the related description is omitted. The chippackaging structure 10 e in FIG. 5A and FIG. 5B is similar to the chippackaging structure 10 c in FIG. 3A and FIG. 3B, and a differencebetween them includes a second opening O1 of the chip packagingstructure 10 e being a trench (as shown in FIG. 5A). Consequently,similarly, an area of the second portion 510 of the antenna pattern 500that is formed on the sidewalls of the trench is increased. Therefore,the signal strength is increased.

It is noted that the first circuit layer 211 in each of the chippackaging structures 10 a-10 e may serve as an antenna and receives asignal through the protecting substrate 100 (for example, a glasssubstrate). Therefore, according to some embodiments, the chip packagingstructures 10 a-10 e may be turned upside down, and the first circuitlayer 211 in chip packaging structures 10 a-10 e may serve as anantenna.

FIG. 6A depicts a schematic top view of chip packaging structure 10 faccording to one embodiment of the present disclosure. FIG. 6B depicts aschematic sectional view of the chip packaging structure 10 f along acutting line A-A′ of FIG. 6A. It is noted that in FIG. 6A and FIG. 6B,the same or similar elements as those in FIG. 2A and FIG. 2B are giventhe same symbols, and the related description is omitted. The chippackaging structure 10 f in FIG. 6A and FIG. 6B is similar to the chippackaging structure 10 b in FIG. 2A and FIG. 2B, and differences betweenthem include an opening O2 presenting in a circuit redistributionstructure 200 of the chip packaging structure 10 f and communicatingwith a second opening O1 of the sealing layer 400.

In addition, a first portion 530 of an antenna pattern 500 of the chippackaging structure 10 f is disposed on a protecting substrate 100 andis covered by the circuit redistribution structure 200. The firstportion 530 is electrically connected to a second circuit layer 221through a first conductive contact member 213. A second portion 510 ofthe antenna pattern 500 is disposed on sidewalls of the opening O2 andsidewalls of the second opening O1, and a bottom of the second portion510 is in contact with and electrically connected to the first portion530.

It is noted that the first portion 530, which is disposed on theprotecting substrate 100, of the antenna pattern 500 may provide sometechnical effects. Specifically, a surface of the protecting substrate100 is usually flatter than a surface of the circuit redistributionstructure 200. Therefore, compared with the first portion 530 of thechip packaging structure 10 b, in which the first portion 530 is formedon the circuit redistribution structure 200, the first portion 530 thatis formed on the protecting substrate 100 is relatively flatter andtherefore can be used in any devices that requires an flatter antennapattern (for example, a high-frequency device).

The present disclosure also provides a method of manufacturing the chippackaging structure 10 f. The difference between the methods ofmanufacturing the chip packaging structure 10 b in FIGS. 2A-2B andmanufacturing the chip packaging structure 10 f includes forming a firstportion 530 of the antenna pattern 500 over the protecting substrate 100simultaneously during the formation of a first circuit layer 211. Forexample, a conductive material on the protecting substrate 100 ispatterned to form a first circuit layer 211 and the first portion 530 ofthe antenna pattern 500. In addition, the first dielectric layer 212further includes another via exposing the first portion 530. The firstconductive contact member 213 is filled in the via as well, such thatthe first conductive contact member 213 is in contact with andelectrically connecting the first portion 530 and the second circuitlayer 221.

Moreover, after the third dielectric layer 232 is formed, only thesecond conductive pad 242 is formed. Consequently, a circuitredistribution precursor structure is formed on the protecting substrate100. After the chip 300 is disposed, a sealing material is formed andcovers the chip 300 and the circuit redistribution precursor structure.Next, the sealing material and the circuit redistribution precursorstructure are patterned by a laser direct structuring process to form asealing layer 400 having at least one second opening O1 and a circuitredistribution structure 200 having at least one opening O2.Subsequently, the second portion 510 of the antenna pattern 500 isformed on sidewalls of the openings O1 and O2 by a chemical depositionprocess.

Although the present disclosure has been described in considerabledetail with reference to certain embodiments thereof, other embodimentsare possible. Therefore, the spirit and scope of the appended claimsshould not be limited to the description of the embodiments containedherein.

It will be apparent to those skilled in the art that variousmodifications and variations can be made to the structure of the presentdisclosure without departing from the scope or spirit of the disclosure.In view of the foregoing, it is intended that the present disclosurecover modifications and variations of this disclosure provided they fallwithin the scope of the following claims.

What is claimed is:
 1. A chip packaging structure, comprising: a circuitredistribution structure comprising: a first circuit redistributionlayer comprising a first circuit layer; a second circuit redistributionlayer disposed on the first circuit redistribution layer and comprisinga second circuit layer electrically connected to the first circuitlayer; and a conductive pad electrically connected to the second circuitlayer; a chip disposed over the circuit redistribution structure andelectrically connected to the second circuit layer; a sealing layercovering the chip and the circuit redistribution structure, wherein thesealing layer has an opening and a groove, the opening corresponds tothe conductive pad, and a portion of the groove communicating with theopening; and an antenna pattern comprising: a first portion covering asidewall of the opening and electrically connected with the conductivepad, wherein an upper surface of the conductive pad is exposed from theopening; and a second portion filling the groove and electricallyconnected with the first portion.
 2. The chip packaging structure ofclaim 1, wherein a top surface of the second portion of the antennapattern is coplanar with a top surface of the sealing layer.
 3. The chippackaging structure of claim 1, further comprising a protectingsubstrate disposed under the circuit redistribution structure.
 4. A chippackaging structure, comprising: a circuit redistribution structure,comprising: a first circuit redistribution layer comprising a firstcircuit layer; and a second circuit redistribution layer disposed on thefirst circuit redistribution layer and comprising a second circuit layerelectrically connected to the first circuit layer; a chip disposed overthe circuit redistribution structure and electrically connected to thesecond circuit layer; a sealing layer covering the chip and the circuitredistribution structure, wherein the sealing layer has an opening; andan antenna pattern, comprising: a first portion disposed on the circuitredistribution structure and covered by the sealing layer, wherein thefirst portion is electrically connected to the second circuit layer, andthe opening corresponds to the first portion; and a second portioncovering a sidewall of the opening and electrically connected with thefirst portion, wherein an upper surface of the first portion is exposedfrom the opening.
 5. The chip packaging structure of claim 4, furthercomprising a protecting substrate disposed under the circuitredistribution structure.
 6. The chip packaging structure of claim 4,wherein the sealing layer further comprises a groove, and a portion ofthe groove communicates with the opening, wherein the antenna patternfurther comprises a third portion filling in the groove and electricallyconnected with the second portion.
 7. The chip packaging structure ofclaim 6, wherein a top surface of the third portion of the antennapattern is coplanar with a top surface of the sealing layer.
 8. The chippackaging structure of claim 4, wherein the opening is a trench or athrough hole.
 9. A chip packaging structure, comprising: a protectingsubstrate; a circuit redistribution structure having a first opening,wherein the circuit redistribution structure is disposed on theprotecting substrate and comprises: a first circuit redistribution layercomprising a first circuit layer; and a second circuit redistributionlayer disposed on the first circuit redistribution layer and comprisinga second circuit layer electrically connected to the first circuitlayer; a chip disposed over the circuit redistribution structure andelectrically connected to the second circuit layer; a sealing layercovering the chip and the circuit redistribution structure, wherein thesealing layer has a second opening communicating with the first opening;and an antenna pattern, comprising: a first portion disposed on theprotecting substrate and covered by the circuit redistributionstructure, wherein the first portion is electrically connected to thesecond circuit layer, and the first opening corresponds to the firstportion; and a second portion covering a sidewall of the first openingand a sidewall of the second opening, wherein the second portion iselectrically connected to the first portion, wherein an upper surface ofthe first portion is exposed from the first opening.